Cultivator



Oct. 4, 1927.

C. G. STRANDLUND CULTIVA'IOR Filed April 19, 11921 5 Sheets-Sheet 1 .ZnusnZzr M49 Man-152.7.

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Oct. 4,11927.

C. G. STRANDLUND v CULTIVATOR Filed April 19, 1921 I 5 Sheet s-Sheet 2 .Znua his/r f n i 2% Vllrlns s s;

Oct. 4, 1927.

C. G. STRANDLUND CULTIVATOR Filed April 19, 1921 3 Sheets-Sheet :s

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Mbrn E. 7.77.

Patented Oct. 4, 1927.

UNITED sTArEs PATENT OFFICE.

CARL G. STBANDLUND, 0F MOL INE,

ILLINOIS, AssiGNo'R to name a countr or MOLINE, rumor A CORPORATION or rumor I CULTIVATOR:

Application filed April 19, 1921. Serial No; 462,618.

lowering. the rigs. A further object is to combine the improved connecting and the raising and lowerlng means w th means for balancing the frame of the cultivator.

Referring to the drawings in which like numerals indicate identical parts. Figurel is atopplan view of my cultivator.

Figure 2 isa a-aof Figure 1, and showing'the cultivator rigs in lowered position.

Fig'ureB is a similar view to Figure 2, but with the cultivator rigs in elevated position. Supporting wheels 10 are journaled on laterally e-xtendingvlower portions of an arch axle 11. The arch axle may be in a single piece but in this instance I prefer to make it in vtwo parts, each having an upper portion pivotally mounted in a transverse horizontal bearing member 12 and held from endwise movement in relation to the member 12 by set collars 13, secured to the bearing 12 and having extensions 14 engaging lips 15 of set collars 16 secured to the axles 11. Forwardly extending and converging frame members 17 are secured atrtheir rear ends by bolts 18'to castings 19 secured to the bearing member 12. At their forward endsthe frame: members 17 are secured by boltsQO and'21 to a casting 22. Intermediate their lengths; the frame members 17 are further secured by means of a bracing member 23-" to which are secured rearwardly extending converging seat bars 24whic'h' rest, intermediate their lengtln on the member 12 and on their rear portions carry a seat-25r Foot rests 26 are secured to and depend from the member12 and are braced by means of a U sha-ped member 27 attached to each of the foot-rests 26 and to the brace membellii A draft pole 28 extends. through a suitable opening in the casting 22 and is attached at its rear portion toa bracket 29-secured to the brace 23.

The" horizontal connecting portion of an arch member 30 is journaled for-fore and aft swinging movement in a suitable transvei se bearing in the casting 22 The arch member 30. has the. usual depending members or legs and in this instanceintegral'laterally on tending; lower portions which form transside elevation taken on 1 lineverse horizontal axes upon which are jour naled the forward portions of cultivator rigs 31 so thatsaidri gsmay swingerscally independently ofeach other. Qbvious ly the arch 30 functions as a air o-f which are adapted to swing oreand-sit in umson. The cultivator drag bars orrigs-31 are of axwell known tfype'and earrythe usual earthworkin-g devices 32. 'E ndwisqmove ment of the F1 8 in relation tothe e-rely 30 isprevented by means of set eollars 3i which however, permit theri sta beetl ate various justed laterally to accommwidths of rows. g a

i Foreand aft swinging movement of the arch member 30 is controlled througharod; 34 pivotally attachedat one end to one of the laterally extending lower portionsof the dependinor members of the arch and at other end to a lever 35 which is pivotally mounted on a sector 36 secured to one ofthe castings119 The lever 35 carries the usual latch and dog device adapted-to engage one of a series ofnotches in the sector'gfii Members in the form of links 37, parallel with the depending members or legs of the" arch 30, and spaced therefrom longitudinally of the machine are pivotally connected at their lower ends with eye 'boltsl38 securedio? the rigs 31; Attheir upper ends thelinks 37 are pivotally connected to levers 39' whichare pivotally mounted on sectors 40 secured to the castings 194 Theinembers or. links-'37 being parallel with the dependingVmembers or links of the arch 30 effect a vertical trans-f latory movement of'therigs when said mean bersare'swung'fore and aft by the actuation of the lever 35, i.- e;, the rigs. maintain their horizontal position while being raised and lowered and they may be set'nor'mallyinvarious workingpositions by means of the"; locking devices associated with'said lever. Thelevers 39 also carry the usual latch and dogdevice adapted toengage withnotches 1n the sectors 40-. Theflevers 39am for the" purpose of swinging either of the rigs'31' arou'ndthe transverse horizontal axis formed by the laterally extending lowerportioils of' the arch30 to raise or lower them. :As a, lever is provided for each rig, either-rig can be raised or lowered independently of'the' other. ,7 V 1 1 a 7 Connecting rods or links 41 arepivotally. connected at their rearward ends to' the lowerportions. of castings 42 secured to theaxle 11. Near their forward ends the connecting rods 41 are pivotally attached to the laterally extending lower portions of the arch 30 and are held from transverse movement on the arch by means of pins 42*. It is evident that the depending members of the arch 30 and the connecting rods ll form a toggle and by swinging the arch 30, by means of the lever 35, the axle members 11 will be swung in their bearing in the member 12 and the supporting wheels will be moved longitudinally of the frame rearwardly for the purpose of compensating for the shifting of the weight when the cultivator rigs are raised or lowered.

The forward ends of the connecting rods 41 are, in this instance, each formed with an eye to which eyes are secured draft links 43 which are also connected with the lower portions of depending draft bars 44. The

upper ends of the draft bars a l are pivotallyconnected with a horizontal draft bar 45 secured to the pole 28 by a bolt 46. In suitable holes in the draft bars 44 the usual singletrees 47 are connected by means of hooks 48.

Assuming the various parts to be in the position shown in Figure 2, it is evident from the foregoing that by stroking the lever 35 downwardly the arch will be swung rearwardly and upwardly around its bearing in the casting 22 and the links 37' will be swung rearwardly and upwardly around their pivots in the levers 39 in parallel relationship with the arch members 30 thereby raising the cultivator rigs while they maintain their horizontal position, and at the same time, by reason of the arch 30 being connected with the axle members 11 by means of the rods 41, the axles 11 will be i assume the position shown in Figure 2.

Not only is provision made for adjusting the gang bars and their tool sets at any time in horizontal parallelism, and for holding them ateither of several working horizontal planes, for different duties, but provision is also made for quickly lifting the tools in horizontal parallelism from any of their variable working planes to their highest elevation without destroying their adjustment.

No matter what work they are doing,

whether cultivating deeply or penetrating only to lines of lesser depth, they can, when the machine reaches the end of a traverse across the field, be quickly lifted by a single movement of the operator, and then be as uickly returned by a single movement to t eir said adjusted positions. And the gang bars, respectively, may be differently adjusted, as circumstances require, and their adjusting devices can be locked in position, and yet all of the tools can be simultaneous 1y elevated, as when the machine is to be turned, and, after turning, the tools of each set can be again lowered to occupy the work ing position to which they had been previously adjusted.

Moreover, as the maintaining of horizontal parallelism causes bodily movement forward or backward of the tool sets, with a corresponding throwing of the apparatus out of balance, provision is made for throwing the wheels in such way as to maintain the predetermined balance. The arms or links which are interposed between the swinging front arch and the wheel carriers move the wheels in correspondence with the tool bar movement, the arms or links being moved toward or from alinement with the arch legs and the wheels being moved forward or backward in correspondence with the movement, bodily of the tool bars. Said arch legs and the links 41 are brought into alinement when the rigs are translated to the highest position shown in Fig. 3 and then become effective to lock the parts in such position so that the lever is relieved of strains that it would otherwise have to withstand.

I claim:

1. In a cultivator of the type described,

the combination of a frame, supporting wheels therefor, a tool carrying rig, parallel members suspending said rig at longitudinally separated points from the frame and arranged to swing fore and aft, to translate the same vertically, a lever mounted on the frame, means connecting said lever wit-h said members for swinging the same in uni son by the actuation of said lever, and means operable to swing said rig vertically about a transverse axis. I

2. In a cultivator of the type described, the combination of a frame, supporting wheels therefor, a tool carrying rig, parallel members suspending said rig at longitudinally separated points from said frame and arranged to swing fore and aft to translate the same vertically, a lever for actuating said members, means, for locking said lever to hold said rig normally in either of several working positions, and means operable inde-- pendently of the actuation of said lever to swing said rig vertically about a transverse axis.

3. In a cultivator of the type described, the combination of a frame, supporting wheels therefor, tool carrying rigs, two parallel members connected with each rig at longitudinally separated points and with the frame, to swing fore and aft, means operable to swing said members in parallelism to translate the rigs vertically, and means for swinging said rigs about transverse axes independently of each other and of the actuation of said translatory means.

4. In a cultivator of the type described, the combination of a frame, supporting wheels therefor, a tool carrying rig, parallel members connected with said rig at longit-udinally separated points and with the frame, .to swing fore and aft, means operable to swing said members in parallelism to translate the rig vertically, and a lever associated with said rig and connected with one of said parallel members for swinging said rig vertically about a transverse axis independently of theoperation of said translatory means.

5. In a cultivator of the type described, the combination of a frame, an arched axle pivotally connected with said frame to swing fore and aft, wheels mounted on said axle, tool carrying rigs, parallel members connecting said rigs with said frame and adapted to swing fore and aft to translate the rigs vertically, a lever mounted on the frame, means connecting said lever with the rigs for swinging said members in parallelism, and means actuated by the swinging of said members for rocking said axle.

In a cultivator of the type described, the combination of a frame, an arched axle pivotally connected with said frame to swing fore and aft, wheels mounted on said axle, tool carrying rigs, parallel members connecting said rigs with said frame and adapted to swing fore and aft to translate the rigs vertically, a lever mounted on the frame, means connecting said lever with the rigs for swinging said members in parallelism, means actuated by the swinging of said members for rocking said axle, and means for vertically adjusting the rigs independently of their translatory movement.

7. In a cultivator of the type described, the combination of a frame, an arched axle pivotally connected with said frame to swing fore and aft, wheels mounted on said axle, tool carrying rigs, parallel members connecting said rigs with said frameand adapted to swing fore and aft to translate the rigs vertically, a lever mounted on the frame, a rod connecting said lever with the forward por-- tion of the rigs and operable by said lever to swing said members in unison, and means actuated by the swinging of said members to rock said axle.

8. In a cultivator of the type described, the combination of a frame, an ached axle pivotally connected with said frame to swing fore and aft, wheels mounted on said axle, tool carrying rigs, a front arch pivotally mounted on the frame and having depending members connected with said rigs, links connected with the frame and with said rigs to swing fore and aft in parallelism with said members to translate the rigs vertically, a le- 'ver mounted on the frame, a rod connecting said lever with the forward portion of the rigs and operable by said lever to translate the rigs vertically, and connecting rods between the depending members of said front arch and the lower portions of the arched axle and movable into alinement with said members when'the rigs are raised to their highest position.

CARL G. STRANDLUND.

CERTIFICATE OF CORRECTION.

Patent No. 1,644,042. Granted October 4, 1927, to

EARL G. STRANDLUND.

it is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 2, line 39, for the words "axle members" read "axles" and line 40, for the word "axles" read "axle members"; page 3, line 3, claim 3, after the word "rigs" insert the word "vertically"; and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Ottice.

Signed and sealed this 20th day of December, A. D. 1927.

M. J. Moore,

Seal. 'Acting Commissioner of Patents. 

